We develop intelligent, rule-based portfolio strategies for investors
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We develop intelligent, rule-based portfolio strategies for investors

Remove uncertainty about your investment strategy decisions and get superior returns with greater safety. Our quantitative portfolio strategies are ... more


Logical Invest Investment Outlook - July 2018
General investor sentiment is quite bearish. The most recent AAII Investor Sentiment survey shows only 28% of investors believe the markets will do well in the next 6 months, while 40% are bearish and 30% are neutral.
ZIV/MYRS – How To Go On After The Crash
This VIX Future spread price of -1.30$ is a very rare occasion. Normally the curve is in contango which means that the further out a VIX future is, the more expensive it is.
Logical Invest Investment Outlook - August 2017
The VIX index hit a record low on July 26th, falling temporarily to 8.84, a level last seen back in 1993. Moreover the index stayed under the 10 level for 10 consecutive days showing persistence.
Logical Invest Investment Outlook - July 2017
The U.S. Federal Reserve raised its benchmark federal-funds rate on June 15th by a quarter percentage point and hinted to further hikes. Individual investors remain skeptical of the bull market as the AAII survey shows 43.4% being neutral.
Logical Invest Investment Outlook - May 2017
As we are heading into early summer, most assets classes are performing well partly due to a weakening U.S. dollar. Domestic equity continues to reach new highs, foreign and emerging equity markets are up.
The Long-Short US Sector Rotation Strategy
The following paper will explain how to build a U.S. sector rotation strategy which allocates dynamically between 4 different long US sector rotation strategies and one short US sector rotation strategy.





Logical Invest
Concerned about your IRA Roth? Moderate Risk Portfolio for 401 from Logical Invest #nasdaq #nasdaq #gold https://t.co/7V0N2eHj8I less
Logical Invest
Short Term Bond Strategy | Asset Class and Sector Rotation Strategy | Logical Invest FYI:... https://t.co/5PvCSglUxQ
Logical Invest
Aggressive Gold-USD sub-strategy | Asset Class and Sector Rotation Strategy | Logical Invest ICYMI:... https://t.co/wzodZZITY9
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Latest Posts
Update Of Our Asset Allocation Models
Update of our tactical asset allocation models, 10 of them added recently and are free for all our followers
Updated Overview Of Our Asset Allocation Models
With the launch of our new app we've been asked by several followers to provide an overview of the asset allocation models we currently publish. Several of them are free upon registration, so check it out!
Logical Invest 2.0: Strategy & Launch Of New Application
Logical Invest launches new web application

Work Experience

Founder & Partner
January 2013 - Present (6 years 3 months)
Logical-Invest.com develops intelligent rule based portfolio investment strategies. These strategies are offered on a subscription basis to the public through www.rent-a-strategy.com.
Colour-Science AG
June 2002 - Present (17 years)
- Development of the i2e (intelligent image enhancement) technology - Red eye removal - Image noise removal - Image processing - Quality monitoring software - ICC profiling


Eidgenössische Technische Hochschule Zürich
1988 / 1989
Master of Business Administration
Ecole polytechnique fédérale de Lausanne
1983 / 1988
Microtechnics, Robotics


The Logical-Invest Rotation Strategy Blog
Frank Grossman
Logical Invest

Logical-Invest.com started out as a place to join Frank Grossmann’s popular Global Growth Strategies and now has grown to include a team of researchers, strategy developers and successful investors. We share a passion for logical, rules based investing and a willingness to share our learning with others.